CN201215420Y - Highly efficient radiation cooling board for space - Google Patents
Highly efficient radiation cooling board for space Download PDFInfo
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- CN201215420Y CN201215420Y CNU2007201910067U CN200720191006U CN201215420Y CN 201215420 Y CN201215420 Y CN 201215420Y CN U2007201910067 U CNU2007201910067 U CN U2007201910067U CN 200720191006 U CN200720191006 U CN 200720191006U CN 201215420 Y CN201215420 Y CN 201215420Y
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Abstract
The utility model relates to a high efficiency radiant cooling panel for spaces, in particular to a high efficiency radiant cooling panel adopting radiant heat exchange technique, for aerospace space technical field, belonging to the space low temperature technical field. The high efficiency radiant cooling panel comprises a metal mirror surface, a bottom plate and an aluminum honeycomb, which is characterized in that the aluminum honeycomb has the honeycomb holes of regular polygons, the honeycomb has the height consistent to the inner plate of the bottom plate, the honeycomb is welded on the plate inner part of the bottom plate, each honeycomb hole is coated by black paints to form a black chamber, the back of the bottom plate is a metal mirror surface, and a plurality of membrane layers are made by plating nickel, optically polishing, plating gold and plating transparent silicon oxide membrane. The utility model improves the radiation heat exchange area, improves the emission rate of the radiation face and the heat conductivity, and reduces the effect of the external heat flow on the heat radiation of the cooling panel, which has the advantages of high structure strength, low weight and high radiation heat exchange efficiency. The high efficiency radiant cooling panel can be used in space radiation heat exchangers such as infrared detection radiation refrigerator, spacecraft thermal controller and space condition ground simulator and the like.
Description
Technical field
The present invention relates to a kind of high-efficiency radiation cold plate for spacing, particularly a kind of high-efficiency radiation cold plate that is used for aerospace field employing radiation heat transfer technology belongs to cryogenic technique field, space.
Background technology
The cosmic space is the cold black background about a high vacuum, 3～4K, and the space radiation Refrigeration Technique is exactly the refrigeration heat transfer technology that a kind of high vacuum of utilizing the cosmic space nature, profound hypothermia and black heat sink condition grow up, its operation principle is: utilize high efficiency radiation cold plate, to universe deep cooling space radiation energy, carry out radiation heat transfer, reduce the temperature of target object, reach the refrigeration purpose.Radiation refrigeration is a kind of passive type Refrigeration Technique, and it is high and do not have a plurality of advantages such as power consumption that it has a good stability, reliability.Therefore in spacecraft thermal control task, radiation refrigeration is used as important thermal control means and adopts, as the employed radiation refrigerator of earth observation remote sensing instrument, and the heat loss through radiation device of small space environment ground simulation device and spacecraft.
Radiation cold plate is being undertaken the radiation heat transfer task to cosmic space cold black background radiations heat energy as the crucial execution unit of space radiation refrigerating plant.Because the emissivity in cosmic space is approximately 1, and temperature is near absolute zero, and the absorption of radiant energy is leveled off to 1, and it is equivalent to an infinitely-great black matrix space.According to the radiation heat transfer theory, the emissivity of the radiating surface of radiation cold plate is big more, and its radiant force E is just strong more.Simultaneously, under the situation of same transmit rate, swept area is big more, and the energy Q that radiation cold plate gives off is just many more.But spacecraft is to the restriction of radiation cooling device size, volume, weight etc., corresponding various structures and the performance that has also retrained radiation cold plate.At present, many radiation heat transfer equipment of China's spacecraft all can't satisfy the space radiation refrigeration requirement under restrictive condition preferably.
In the space, the heat radiation of spacecraft equipment of itself also is the key factor that influences the radiation cold plate performance.How to reduce the heat load of the external world's (earth, sunlight, spacecraft body and instrument), it is as far as possible little, big as far as possible to the radianting capacity in cosmic space to reach extraneous heat load, thereby reducing the temperature of radiation cold plate and the absorption cold ability of increase radiation cold plate, also is to improve the high efficiency problem of needing solution badly of radiation cold plate.
Summary of the invention
The objective of the invention is to increase the radiation heat transfer area, improved radiating surface emissivity and thermal conductivity factor, reduced of the heat radiation influence of outer hot-fluid cold drawing.
For achieving the above object, the technical solution that the present invention adopts is:
The metal plate cellular structure is adopted with radiation cold plate in the space, mainly is divided into metallic mirror surface, base plate and aluminium honeycomb two parts.Baseboard material is an aluminium matter alloy, is shaped as plate-like.Honeycomb is an aluminium matter honeycomb, and honeycomb hole is shaped as regular polygon, and the honeycomb height is consistent with base plate inner disc height, adopts brazing mode to be connected base plate dish type inside.About 200 ℃ vacuum brazing mode is adopted in soldering, and the pulling-out force between aluminium honeycomb and the soldered base plate is greater than 1.5 * 10
6Pa, the weight of welding position is no more than by 10% of weldering base plate and aluminium honeycomb weight sum.Radiation cold plate radiating surface (being aluminium honeycomb face) is spray black coating evenly, and the blacking hemispherical emissivity is not less than 0.87, and in the manufacture craft of solidifying below 55 ℃.Coating adopts and repeatedly covers spraying, and each honeycomb hole relies on coating to form blackbody cavity, and whole radiating surface hemispherical emissivity reaches more than 0.98.The back side of radiation cold plate is metallic mirror surface, adopts nickel plating, optical polish, gold-plated and plate transparent silicon oxide film and make a plurality of coating, and as nickel plating coating, gold-plated coating, the transparent silicon oxide film coating of plating etc., the pulling-out force of each coating is greater than 1.5 * 10
5Pa.By above technology, can guarantee that welding position ability room temperature to liquid nitrogen thermal shock does not ftracture, do not peel off more than 100 times; Radiation cold plate radiating surface (being aluminium honeycomb face) multilayer spray black coating, the ability room temperature does not ftracture, does not peel off more than 20 times to the liquid nitrogen thermal shock, and characteristic does not have significant change; The back side of radiation cold plate is metallic mirror surface, and the ability room temperature does not ftracture, do not peel off for 100 times to the liquid nitrogen thermal shock, and the total infrared reflectivity of metallic mirror surface is greater than 0.95.
The advantage of invention and the beneficial effect of generation
The beneficial effect of advantage of the present invention and generation is, adopts dull and stereotyped cellular structure, makes overall weight light, the structural strength height, and improved the radiation heat transfer area; The aluminium honeycomb adopts vacuum brazing to be connected with base plate, has improved bonding strength and thermal conductivity factor; The high emissivity of radiation cold plate radiating surface spraying is pitch-dark with after honeycomb combines, and the emissivity that makes radiating surface is up to more than 0.98; The high reflectance minute surface that adopt at the radiation cold plate back side, its infrared reflectivity are greater than 0.95, and fully isolated External Heat Flux influence makes outer hot-fluid reach minimum to the influence of cold drawing.Comprehensive above measure, the present invention can obtain radiation heat transfer performance efficiently under the condition of space environment.Through verification experimental verification, the present invention can fully satisfy the requirement to radiation cold plate of space radiation refrigeration plant, especially radiation refrigerator.
Description of drawings
Fig. 1 is a stravismus schematic diagram of the present invention;
Fig. 2 is the local figure of cross section of the present invention.
Form: base plate-1, honeycomb-2, coating-3, welding position-4, metallic mirror surface-5.
The specific embodiment
As shown in Figure 1, the present invention adopts dull and stereotyped cellular structure, mainly is divided into base plate 1 and honeycomb 2 two parts.Base plate 1 adopts aluminium matter alloy to make, and is shaped as plate-like, thickness of slab 1.5mm.Honeycomb 2 is an aluminium matter honeycomb, and honeycomb hole is shaped as regular hexagon, and the honeycomb height is consistent with base plate inner disc height, adopts the vacuum brazing mode to be connected base plate dish type inside.
As shown in Figure 2, base plate 1 of the present invention adopts 200 ℃ vacuum brazing mode with the welding of honeycomb 2, and the pulling-out force of the welding position 4 between aluminium honeycomb and the soldered base plate is greater than 1.5 * 10
6Pa, the ability room temperature does not ftracture, does not peel off for 100 times to the liquid nitrogen thermal shock, and welding position 4 weight are no more than by 10% of weldering base plate and aluminium honeycomb weight sum.Coating 3 evenly covers radiation cold plate radiating surfaces (being aluminium honeycomb face), adopts to cover that to spray the trade mark be that the blacking of SB-3 is made blacking hemispherical emissivity 0.87 for 7 times.Coating 3 adopts the manufacture craft of solidifying below 55 ℃, and ability room temperature to liquid nitrogen thermal shock does not ftracture, do not peel off for 20 times, and characteristic does not have significant change.Each honeycomb hole relies on coating 3 all to form blackbody cavity, and the hemispherical emissivity of radiating surface of the present invention reaches 0.98.Metallic mirror surface 5 is positioned at the back side of radiation cold plate, adopts nickel plating, optical polish, method gold-plated and that plate transparent silicon oxide film to make successively, and the pulling-out force of coating is greater than 1.5 * 10
5Pa, the ability room temperature does not ftracture, does not peel off for 100 times to the liquid nitrogen thermal shock, and the total infrared reflectivity of metallic mirror surface 5 is greater than 0.95.
Claims (5)
1, a kind of space radiation cold plate comprises metallic mirror surface, base plate and aluminium honeycomb; It is characterized in that: honeycomb is an aluminium matter honeycomb, and honeycomb hole is shaped as regular polygon, and the honeycomb height is consistent with base plate inner disc height, adopts brazing mode to be connected base plate dish type inside; Each honeycomb hole relies on spray black coating to form blackbody cavity, and the back side of base plate is metallic mirror surface, adopts nickel plating, optical polish, gold-plated and plate transparent silicon oxide film and make a plurality of coating.
2, a kind of space according to claim 1 radiation cold plate is characterized in that: 200 ℃ vacuum brazing mode is adopted in soldering, and the pulling-out force between aluminium honeycomb and the soldered base plate is greater than 1.5 * 10
6Pa, the weight of welding position is no more than by 10% of weldering base plate and aluminium honeycomb weight sum.
3, a kind of space according to claim 1 radiation cold plate is characterized in that: aluminium honeycomb face spray black coating, and the blacking hemispherical emissivity is not less than 0.87, and in the manufacture craft of solidifying below 55 ℃; Coating adopts the covering spraying more than 2 times, and whole radiating surface hemispherical emissivity reaches more than 0.98.
4, a kind of space according to claim 1 radiation cold plate, it is characterized in that: the pulling-out force of each coating is greater than 1.5 * 10
5Pa.
5, a kind of space according to claim 1 radiation cold plate is characterized in that: the total infrared reflectivity of metallic mirror surface is greater than 0.95.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201910067U CN201215420Y (en) | 2007-12-28 | 2007-12-28 | Highly efficient radiation cooling board for space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201910067U CN201215420Y (en) | 2007-12-28 | 2007-12-28 | Highly efficient radiation cooling board for space |
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| Publication Number | Publication Date |
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| CN201215420Y true CN201215420Y (en) | 2009-04-01 |
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| CNU2007201910067U Expired - Fee Related CN201215420Y (en) | 2007-12-28 | 2007-12-28 | Highly efficient radiation cooling board for space |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101469914B (en) * | 2007-12-28 | 2011-10-05 | 中国航天科技集团公司第五研究院第五一〇研究所 | High-efficiency radiation cold plate for spacing |
| CN104374798A (en) * | 2014-10-31 | 2015-02-25 | 上海卫星工程研究所 | System and method for testing equivalent emissivity of electrically controlled heat shield |
| CN107883493A (en) * | 2017-11-15 | 2018-04-06 | 华东交通大学 | Infrared radiation cooling system with closing refrigerating function |
| CN108507227A (en) * | 2018-04-20 | 2018-09-07 | 深圳瑞凌新能源科技有限公司 | A kind of cooling water system using radiation refrigeration |
| CN112378114A (en) * | 2020-10-30 | 2021-02-19 | 宁波瑞凌新能源科技有限公司 | Radiation refrigeration structure, preparation method thereof and radiation refrigeration product |
| CN115684045A (en) * | 2022-09-27 | 2023-02-03 | 厦门大学 | Spectrophotometer-based method and system for inherent optical measurement of spherical phaeocystis fuscus capsule |
-
2007
- 2007-12-28 CN CNU2007201910067U patent/CN201215420Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101469914B (en) * | 2007-12-28 | 2011-10-05 | 中国航天科技集团公司第五研究院第五一〇研究所 | High-efficiency radiation cold plate for spacing |
| CN104374798A (en) * | 2014-10-31 | 2015-02-25 | 上海卫星工程研究所 | System and method for testing equivalent emissivity of electrically controlled heat shield |
| CN107883493A (en) * | 2017-11-15 | 2018-04-06 | 华东交通大学 | Infrared radiation cooling system with closing refrigerating function |
| CN108507227A (en) * | 2018-04-20 | 2018-09-07 | 深圳瑞凌新能源科技有限公司 | A kind of cooling water system using radiation refrigeration |
| CN108507227B (en) * | 2018-04-20 | 2024-05-07 | 宁波瑞凌新能源科技有限公司 | Cooling water system utilizing radiation refrigeration |
| CN112378114A (en) * | 2020-10-30 | 2021-02-19 | 宁波瑞凌新能源科技有限公司 | Radiation refrigeration structure, preparation method thereof and radiation refrigeration product |
| CN112378114B (en) * | 2020-10-30 | 2022-04-15 | 宁波瑞凌新能源科技有限公司 | Radiation refrigeration structure, preparation method thereof and radiation refrigeration product |
| CN115684045A (en) * | 2022-09-27 | 2023-02-03 | 厦门大学 | Spectrophotometer-based method and system for inherent optical measurement of spherical phaeocystis fuscus capsule |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090401 Termination date: 20100128 |